Instant Low-Temperature Cross-Linking of Poly(N-vinylcarbazole) for Solution-Processed Multilayer Blue Phosphorescent Organic Light-Emitting Devices

Poly(N‐vinylcarbazole) undergoes cross‐linking to highly solvent‐resistant films through an oxidative coupling reaction, for which an annealing process takes only 3 min at 110 °C. This reaction allows the construction of a solution‐processed multilayer OLED without a time‐consuming annealing process...

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Bibliographic Details
Published inAdvanced materials (Weinheim) Vol. 26; no. 45; pp. 7543 - 7546
Main Authors Aizawa, Naoya, Pu, Yong-Jin, Chiba, Takayuki, Kawata, So, Sasabe, Hisahiro, Kido, Junji
Format Journal Article
LanguageEnglish
Published Germany Blackwell Publishing Ltd 03.12.2014
Subjects
Annealing
Brightness
cross-linked polymers
Crosslinking
Devices
Joining
multilayer structures
Multilayers
Organic light emitting diodes
organic light-emitting devices
Quantum efficiency
solution-processing
solution-processing
multilayer structures
organic light-emitting devices
cross-linked polymers
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ISSN0935-9648
1521-4095
1521-4095
DOI10.1002/adma.201402726

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Summary:Poly(N‐vinylcarbazole) undergoes cross‐linking to highly solvent‐resistant films through an oxidative coupling reaction, for which an annealing process takes only 3 min at 110 °C. This reaction allows the construction of a solution‐processed multilayer OLED without a time‐consuming annealing process. The maximum external quantum efficiency reaches 18%, and remains at 17%, even at a high brightness of 10 000 cd m−2 for all‐solution‐processed blue OLEDs.
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ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.201402726